which simulator need for home automation ..

hello friend , 
 we go through the codes of home automation through internet .. and it is written in c . we  use keil's evaluation version to run this .. but it shows error programme exceeding memory " .. so plz suggest us to use which simulator to debug and run the home automation project code ..if have keil's full version plz share it . plz reply soon ..

why you want to simulate it.. you can make the same circuit on a bread board and check it.. it should work... there is not much hardware.. i think you should make it. well if u want a sugesstion then you can make use of "Proteus VSM Co-Simulator" its the best for realtime simulation.

preoteus demo is there but it is demo version so the circuit can't be saved and other restriction is there .. do u have full version uploaded ?? u have writtten the code then plz tell which simulator u are using .. beacuse the hex code u have uploaded is not burned in 8051 ic .. plz tell the assembler to convert the c code into hex .. not only for home auto .. but need for another project ..